Number 20 becomes number 24 when recounted (by adding 4 from the end of the previous month), which number agrees with the estimated number of glyph spaces in line Rb2. Next glyph line will presumably begin the 'climbing down' phase. If so, then Rb2-21--*24 possibly are to be regarded as 'extracalendrical', 'dark' nights.

If we count with '1 more' (so to say) and add 1 to the ordinal numbers from *Ra1-1 (in the same way as when we add Gb8-30 when counting ordinal numbers in G) the rising fish in Rb2-16 will be number 260. 216 (in 2-16) is equal to 6 * 36 = 12 * 18 = 9 * 24 and a number which definitely should be used as a corner stone in a calendar of the rongorongo type.

Manu kake will now be at day 264 which is more in order, and the 'fraction' of a glyph in Rb2-22 could correspond to ca ¼ (= 365.25 - 365) of a day:


Rb2-17	Rb2-18	Rb2-19	Rb2-20 (264)
		...	...
Rb2-21	Rb2-22	*Rb2-23	*Rb2-24 (268)

The ruling Sun King should have 10 periods, which will be 260 days if we count with 26 days per period. If we add 4 from the end of the reign of the previous Sun King, 260 will become 264. If we, instead, like to have 10 times 4 added to 260 it will become 300:

Sun	Moon
40 + 260 = 300	4 + 16 = 20

Day number 240 in the year can then be regarded as 40 + 200 and night number 24 in the month as 4 + 20. The bird pair in Rb2-1 was above given ordinal number 244, which can be interpreted as 40 + 200 + 4, maybe meaning 'a joint venture' of Sun and Moon. Now we can adopt the last glyph in line Rb1 as the first glyph of this joint venture (and it will thereby release the tension caused by an odd number of glyphs at the beginning):


*Rb1-17 (244)	Rb2-1	Rb2-2	Rb2-3

The great henua of midnight type in Rb2-3 indicates a great season and at right we can imagine a fusion between haga rave and some other sign. This great season is ending, we can understand from the peculiar manu rere who looks back in Rb2-2. Rb2-3 presumably indicates a Hanga, and it should be Hanga Ohiro. Counting on from 17 (at *Rb1-17) the number at Rb2-3 will be 20.

Another, and similar, pair of birds is found at the beginning of line Ra3:

*ordinal numbers are counted from Rb9-30**
60		166	17		206
	*Ra3-6 (61)	183		Rb2-1 (245)
451 = 185 + 266

Here we can suspect winter solstice and Rogo to be located, because the wing at right carries his sign (and 3-6 alludes to 360). Half a year later Sun and Moon will meet again, and 'climbing the tree' happens at midsummer. If the 'Tree' is scetched in *Rb1-17, then 244 can be read as 64 + 180. Evidently adding 64 to the beginning of the 'front side' is not necessary in R, because these 64 days are already at their proper places at the beginning of the front side:

60
60	*Ra3-6	*Ra3-7	*Ra3-8	*Ra3-9
64

163	16
163	16	*Rb1-17	Rb2-1	Rb2-2	Rb2-3
179		64 + 180 = 244	245	246	247

Rearranging these 64 glyphs at the beginning of side a to the end of the back side of the text, the overall pattern becomes more clear:

179
	*Rb1-17	Rb2-1	Rb2-2	Rb2-3	Rb2-4	Rb2-5
	180	181	182	183	184	185


Rb2-6	Rb2-7	Rb2-8	Rb2-9	Rb2-10	Rb2-11	Rb2-12
186	187	188	189	190	191	192


Rb2-13	Rb2-14	Rb2-15	Rb2-16 (260)
1	2	3	4


Rb2-17	Rb2-18	Rb2-19	Rb2-20 (264)
5	6	7	8 (200)
		...	...
Rb2-21	Rb2-22	*Rb2-23	*Rb2-24 (268)
9	10	11	12

If there should be 451 days in all in the R text, then there will be 451 - 268 = 183 glyphs from the beginning of line Rb3 to the end of side b, and 200 + 4 + 183 + 64 = 451.

If there should be 452 days in the text, then it would fit nicely with 260 + 192, and the rising fish in Rb2-16 could be the last of these 260 days. But tagata in Rb2-12 (number 13 from *Rb1-17) obviously is the last glyph of 192, which means we should begin counting anew with day 1 of 260 at the peculiar ariki in Rb2-13. He forms a pair with the following ariki in Rb2-14 which suggests that the 2nd part of the year has arrived.